kris if you have the cash in hand call that guy and offer him 15 k based on a decent survey. if the survey says its okay buy it for 15. you might need to keep it in florida for a few months, or even the winter but cash is king, and he might go for a cash offer, worse they can say is no.
its getting to be hurrican season he will need to worry about that so the price might come down. heck when talking ask when/if the hurricans hit where the boat is due to maybe having to keep it there for a while. this might get him thinking getting rid of it now is a good idea
if you do get it ins it for the hurricanes